/**
* Copyright (C) 2001-2017 by RapidMiner and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapidminer.com
*
* This program is free software: you can redistribute it and/or modify it under the terms of the
* GNU Affero General Public License as published by the Free Software Foundation, either version 3
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License along with this program.
* If not, see http://www.gnu.org/licenses/.
*/
package com.rapidminer.gui.plotter.charts;
import com.rapidminer.gui.tools.SwingTools;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.Stroke;
import java.awt.geom.Rectangle2D;
import java.awt.geom.RectangularShape;
import org.jfree.chart.HashUtilities;
import org.jfree.chart.renderer.category.BarPainter;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.ui.RectangleEdge;
/**
* The painter for the bar charts.
*
* @author Ingo Mierswa
*/
public class RapidBarPainter implements BarPainter {
/** The division point between the first and second gradient regions. */
private final double g1;
/** The division point between the second and third gradient regions. */
private final double g2;
/** The division point between the third and fourth gradient regions. */
private final double g3;
/**
* Creates a new instance.
*/
public RapidBarPainter() {
this(0.0, 0.3, 0.7);
}
/**
* Creates a new instance.
*
* @param g1
* @param g2
* @param g3
*/
public RapidBarPainter(final double g1, final double g2, final double g3) {
this.g1 = g1;
this.g2 = g2;
this.g3 = g3;
}
/**
* Paints a single bar instance.
*
* @param g2
* the graphics target.
* @param renderer
* the renderer.
* @param row
* the row index.
* @param column
* the column index.
* @param bar
* the bar
* @param base
* indicates which side of the rectangle is the base of the bar.
*/
@Override
public void paintBar(final Graphics2D g2, final BarRenderer renderer, final int row, final int column,
final RectangularShape bar, final RectangleEdge base) {
Paint itemPaint = renderer.getItemPaint(row, column);
Color c0 = null;
if (itemPaint instanceof Color) {
c0 = (Color) itemPaint;
} else {
c0 = SwingTools.DARK_BLUE;
}
// as a special case, if the bar color has alpha == 0, we draw
// nothing.
if (c0.getAlpha() == 0) {
return;
}
g2.setPaint(c0);
g2.fill(new Rectangle2D.Double(bar.getMinX(), bar.getMinY(), bar.getWidth(), bar.getHeight()));
// draw the outline...
if (renderer.isDrawBarOutline()) {
Stroke stroke = renderer.getItemOutlineStroke(row, column);
Paint paint = renderer.getItemOutlinePaint(row, column);
if (stroke != null && paint != null) {
g2.setStroke(stroke);
g2.setPaint(paint);
g2.draw(bar);
}
}
}
/**
* Paints a single bar instance.
*
* @param g2
* the graphics target.
* @param renderer
* the renderer.
* @param row
* the row index.
* @param column
* the column index.
* @param bar
* the bar
* @param base
* indicates which side of the rectangle is the base of the bar.
* @param pegShadow
* peg the shadow to the base of the bar?
*/
@Override
public void paintBarShadow(final Graphics2D g2, final BarRenderer renderer, final int row, final int column,
final RectangularShape bar, final RectangleEdge base, final boolean pegShadow) {}
/**
* Tests this instance for equality with an arbitrary object.
*
* @param obj
* the obj (<code>null</code> permitted).
*
* @return A boolean.
*/
@Override
public boolean equals(final Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof RapidBarPainter)) {
return false;
}
RapidBarPainter that = (RapidBarPainter) obj;
if (this.g1 != that.g1) {
return false;
}
if (this.g2 != that.g2) {
return false;
}
if (this.g3 != that.g3) {
return false;
}
return true;
}
/**
* Returns a hash code for this instance.
*
* @return A hash code.
*/
@Override
public int hashCode() {
int hash = 37;
hash = HashUtilities.hashCode(hash, this.g1);
hash = HashUtilities.hashCode(hash, this.g2);
hash = HashUtilities.hashCode(hash, this.g3);
return hash;
}
}